LTC1421CG#TR - Hot Swap Controller from Linear Technology

The LTC1421CG#TR is a sophisticated hot swap controller designed by Linear Technology, now part of Analog Devices, to manage the safe insertion and removal of circuit boards from live backplanes. This integrated circuit (IC) is tailored to protect the electronic system from the adverse effects of inrush currents that can lead to voltage drops and potentially damage the circuit components.

Key Features

• Electronic Circuit Protection: The LTC1421CG#TR provides a controlled power-up sequence for boards, preventing any damage due to inrush currents when a board is inserted into a live backplane.
• Adjustable Current Limit: It offers an adjustable current limit threshold, enabling customization according to the specific needs of the application.
• Under Voltage Lockout (UVLO): The device includes UVLO features to ensure that the power supply is at a sufficient level before allowing the board to power up.
• Overcurrent Fault Timer: A programmable overcurrent fault timer is integrated to provide a timed response to overcurrent conditions, enhancing the protection mechanism.
• High Voltage Operation: The LTC1421CG#TR is capable of operating at high voltages, making it suitable for a wide range of applications.
• Thermal Shutdown: It offers a thermal shutdown feature to protect the IC from overheating, further enhancing the safety of the system.

Applications

The LTC1421CG#TR is ideal for a variety of applications where safe and controlled power management is essential. These include:

• Server and Telecom Hot Swap Applications
• High Availability Systems
• Redundant Power Supplies
• Industrial Systems

Package and Availability

The LTC1421CG#TR comes in a compact SSOP-16 (Shrink Small Outline Package) that offers a space-saving solution for densely packed circuit boards. This product is available in tape and reel format, denoted by the #TR suffix, which facilitates automated assembly processes for high volume production.

Conclusion

The LTC1421CG#TR from Linear Technology is a robust solution for managing the power requirements of hot swappable boards. With its comprehensive set of features, it ensures the reliability and longevity of electronic systems, making it a valuable component in any high-availability or mission-critical environment.